Skip to content

A Phase Ib/II Study of Fisogatinib(BLU-554) in Subjects With Hepatocellular Carcinoma

A Muti-center, Open-label, Multiple-dose Phase Ib/II Study to Assess the Safety, Tolerability, Pharmacokinetics, Anti-tumor Efficacy of Fisogatinib(BLU-554) in Combination With CS1001 in Subjects With Locally Advanced or Metastatic Hepatocellular Carcinoma (HCC)

Status
Completed
Phases
Phase 1Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04194801
Enrollment
26
Registered
2019-12-11
Start date
2019-12-16
Completion date
2021-10-20
Last updated
2023-02-06

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Hepatocellular Carcinoma

Brief summary

This study will evaluate the safety, tolerability, pharmacokinetic and efficacy of fisogatinib (formerly known as BLU-554) in combination with CS1001 in patients with locally advanced or metastatic hepatocellular carcinoma (HCC)

Interventions

DRUGPhase Ib: Fisogatinib (BLU-554) 400mg in combination with Sugemalimab (CS1001) 1200mg

Phase Ib: participants received 400 mg Fisogatinib (BLU-554) once daily (QD), in combination with 1200mg fixed dose Sugemalimab (CS1001) once every 3 weeks (Q3W). Every 21 days (3 weeks) will be considered as one cycle.

DRUGPhase Ib: Fisogatinib (BLU-554) 600mg in combination with Sugemalimab (CS1001) 1200mg

Phase Ib: participants received 600 mg Fisogatinib (BLU-554) QD, in combination with 1200mg fixed dose Sugemalimab (CS1001) Q3W. Every 21 days (3 weeks) will be considered as one cycle.

DRUGPhase II: Fisogatinib (BLU-554) 600mg in combination with Sugemalimab (CS1001) 1200mg

Phase II: participants received 600 mg Fisogatinib (BLU-554) QD, in combination with 1200mg fixed dose Sugemalimab (CS1001) Q3W. Every 21 days (3 weeks) will be considered as one cycle.

Sponsors

Blueprint Medicines Corporation
CollaboratorINDUSTRY
CStone Pharmaceuticals
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. Voluntarily participate in the clinical study. Fully understand and get informed of this study and sign the Informed Consent Form (ICF). 2. ≥18 years of age on day of signing the informed consent. 3. Unresectable locally advanced or metastatic hepatocellular carcinoma as confirmed by histology or cytology. 4. Stage B or C based on Barcelona Clinic Liver Cancer (BCLC) staging system; In case of Stage B, subject must be ineligible for surgery and/or local therapy, or has progressed after surgery and/or local therapy or refuses surgery and/or local treatment. 5. For Phase Ib, subject has failed after or is unsuitable for the standard systemic therapy against HCC. For Phase II, subject has not previously received systemic therapy. 6. At least one measurable lesion as evaluable by RECIST version 1.1. 7. Eastern Cooperative Oncology Group (ECOG) performance status (PS) score of 0-1 point. 8. A-level Child-Pugh score. 9. Expected survival≥3 months. 10. For Phase Ib and II, fresh or archived tumor tissue should be provided for analysis in the central laboratory. 11. The function of the main organs was basically normal and met the requirements of the protocol. 12. For subject with HCV infection, HCV antiviral treatment with the locally approved and available HCV antiviral therapy can be received. 13. For subjects with HBV infection, HBV DNA ≤ 2,000 IU/ml at Screening. 14. For female subjects of childbearing potential, serum pregnancy test must be negative within 7 days prior to randomization. Except for female subjects who have been recorded as surgically sterilized or who are postmenopausal, female subjects of childbearing potential or male subjects and their partners must agree to use effective contraception from the signature of the informed consent form (ICF) until at least 6 months after the last dose of study drug.

Exclusion criteria

1. tumor thrombus in the main portal vein (VP4) by imaging, involving the inferior vena cava or the heart. 2. Prior history of hepatic encephalopathy. 3. History of liver surgery and/or local treatment for HCC (intervention, ablation therapy, absolute alcohol injection, etc.) or radiotherapy, etc. within 4 weeks prior to first dose. 4. Active or documented gastrointestinal bleeding within 6 months (e.g. esophageal or gastric varices, ulcer bleeding). 5. Presence of ascites detected by physical examination or clinical symptoms caused by ascites during the screening period, or ascites that need for special treatment, such as repeated drainage, intraperitoneal drug infusion, etc. 6. Presence of meningeal metastasis or central nervous system (CNS) metastatic lesions. 7. Subject has clinically significant, uncontrolled cardiovascular disease. 8. History of definite interstitial lung disease or non-infectious pneumonia except that caused by local radiotherapy; history of active tuberculosis. 9. Any serious acute, chronic infections that require systemic antimicrobial, antifungal or antiviral therapy at screening, excluding viral hepatitis. 10. Malabsorption syndrome or inability to take the study drug orally for other reasons. 11. Had primary malignancies other than HCC within 5 years. 12. Subject has had major surgery within 4 weeks prior to first dose (procedures such as central venous cannulation, biopsy, and feeding tube placement are not considered as major surgery). 13. Previously received FGFR4 inhibitor treatment. 14. Blood transfusion, use of hematopoietic stimulating factors \[including G-CSF (granulocyte colony stimulating factor), GM-CSF (granulocyte-macrophage colony stimulating factor), EPO (erythropoietin) and TPO (thrombopoietin)\] and human albumin preparations within 14 days prior to first dose. 15. Requiring corticosteroids (dose equivalent to \> 10 mg/day of Prednisone) or other immunosuppressive drugs within 14 days prior to first dose for systemic therapy. 16. Use of traditional Chinese medicine with anti-liver cancer indication within 14 days prior to the first dose. 17. Subject has received potent CYP3A4 inhibitors and/or inducers within 2 weeks prior to first dose. 18. Concurrent HBV and HCV infection. 19. Subjects with known human immunodeficiency virus (HIV) infection. 20. Lactating women. 21. Subjects with a history of hypersensitivity or hypersensitivity to any of the components of the investigational drug. 22. Circumstances that in the opinion of the investigator would preclude participation in the study. 23. Subjects who are unwilling or unable to follow the study procedures as defined. 24. With the exception of alopecia, all toxicities from prior anticancer therapies and other therapies did not recover to ≤ Grade 1 (per CTCAE v5.0) prior to the first dose of study drug. 25. Subjects who have received prior allogeneic stem cell or solid organ transplantation.

Design outcomes

Primary

MeasureTime frameDescription
Phase Ib: Patients With Event(s) of Dose-limiting ToxicityCycle 1 (21 days) of treatmentNumber of DLT (Dose-limiting toxicity) During the Administration of BLU-554 in Combination with CS1001. All toxicity or adverse events (AEs) are graded according to NCI-CTCAE 5.0. Any AE occurring during C1 (21 days) that is not clearly caused by something other than investigational drug.
Phase Ib: Safety and ToleranceSafety and tolerance assessments continued for the duration of treatment. AEs and SAEs will be collected from time of signature of main informed consent, throughout the treatment period and including the follow-up period, up to approximate 22 months.An AE was any untoward medical occurrence after clinical study subjects receive study drug. An SAE was any event that meets any the following criteria: death, life-threatening; inpatient hospitalization or prolongation, persistent or significant disability/incapacity;congenital malformation/birth defects and significant medical events. AE and SAE were graded by CTCAE version 5.0 by severity, from Grade 1 mild to Grade 5 death related AE.
Phase II: Objective Response Rate (ORR) Assessed by Investigator Based on RECIST Version 1.1Imaging (CT or MRI) assessments per RECIST v1.1 will be performed within 28 days prior to the first dose (baseline assessment), every 9 weeks during the first year of the study, and every 12 weeks thereafter. Up to 22 months.Per Response Evaluation Criteria in Solid Tumors Criteria (RECIST v1 .1) for target lesions and assessed by MRI/ CT: Complete Response (CR), Disappearance of all target lesions; Partial Response (PR), \> =30% decrease in the sum of the longest diameter of target lesions; Objective Response (OR) = CR + PR. Percentage of subjects who achieve objective tumor response (CR or PR) will be summarized.

Secondary

MeasureTime frameDescription
Patients With Anti-CS1001 AntibodyPre-dose of Cycle 1, 2, 4, 5, 7, 10, 13, 16 and every 8 cycles thereafter. Up to 22 months.
Overall SurvivalSubject should be followed from time of registration till the time of subject death. Up to 22 months.Overall survival is defined as the time interval between the date of the first investigational product dose to the date of death from any cause
Disease Control Rate by PD-L1 Protein LevelImaging (CT or MRI) assessments by FGF19 protein and PD-L1 protein level will be performed within 28 days prior to the first dose (baseline assessment), every 9 weeks during the first year of the study, and every 12 weeks thereafter. Up to 22 months.
Objective Response Rate (ORR) by PD-L1 Protein LevelImaging (CT or MRI) assessments by FGF19 protein and PD-L1 protein level will be performed within 28 days prior to the first dose (baseline assessment), every 9 weeks during the first year of the study, and every 12 weeks thereafter. Up to 22 months.
Progression-free Survival Assessed by InvestigatorImaging (CT or MRI) assessments per RECIST v1.1 will be performed within 28 days prior to the first dose (baseline assessment), every 9 weeks during the first year of the study, and every 12 weeks thereafter. Up to 22 months.Progression-free Survival is defined as the time from the date of first study dose to disease progression or death (whichever occurs first).
Time to Progression Assessed by InvestigatorImaging (CT or MRI) assessments per RECIST v1.1 will be performed within 28 days prior to the first dose (baseline assessment), every 9 weeks during the first year of the study, and every 12 weeks thereafter. Up to 22 months.Time to Progression is defined as the time from the date of first study dose to disease progression. Subjects without event (no disease progression) will be censored at the date of last tumor assessment.
Phase II: Safety and ToleranceSafety and tolerance assessments continued for the duration of treatment. AEs and SAEs will be collected from time of signature of main informed consent, throughout the treatment period and including the follow-up period, up to approximate 22 months.An AE was any untoward medical occurrence after clinical study subjects receive study drug. An SAE was any event that meets any the following criteria: death, life-threatening; inpatient hospitalization or prolongation, persistent or significant disability/incapacity;congenital malformation/birth defects and significant medical events. AE and SAE were graded by CTCAE version 5.0 by severity, from Grade 1 mild to Grade 5 death related AE.
Pharmacokinetic Parameters of Accumulation Ratio of Fisogatinib (BLU-554)For BLU554, Cycle 1 day 1( 0, 0.5 to 24 hour post dose) and Cycle 2 day 1( 0, 0.5 to 24 hour post dose).Pharmacokinetic(PK) parameters of accumulation ratio of Fisogatinib (BLU-554),Rac,AUC. Only participants with evaluable PK results were included in the analysis. Where data is not presented, the PK profiles were non-measurable. Results for Phase Ib and Phase II have been pooled for the same dosage.
Disease Control Rate Assessed by InvestigatorImaging (CT or MRI) assessments per RECIST v1.1 will be performed within 28 days prior to the first dose (baseline assessment), every 9 weeks during the first year of the study, and every 12 weeks thereafter. Up to 22 months.Disease control rate (DCR) is defined as the proportion of participants who achieve complete response (CR), partial response (PR), and stable disease (SD) based on Response Evaluation Criteria In Solid Tumors (RECIST)v1.1. Per Response Evaluation Criteria in Solid Tumors Criteria (RECIST v1 .1) for target lesions and assessed by MRI/ CT: Complete Response (CR), Disappearance of all target lesions; Partial Response (PR), \> =30% decrease in the sum of the longest diameter of target lesions. Stable disease(SD) is defined as a tumor that does not meet the criteria for progression or for response.
Pharmacokinetic Parameters of Clearance at Steady State (CLss) of Fisogatinib (BLU-554)For BLU554, Cycle 1 day 1( 0, 0.5 to 24 hour post dose) and Cycle 2 day 1( 0, 0.5 to 24 hour post dose).Pharmacokinetic Parameters of Clearance at Steady State (Clss) of Fisogatinib (BLU-554). Only participants with evaluable PK results were included in the analysis. Where data is not presented, the PK profiles were non-measurable. Results for Phase Ib and Phase II have been pooled for the same dosage.
Pharmacokinetic Parameters of Maximum Serum Concentration (Cmax) of Fisogatinib (BLU-554)For BLU554, Cycle 1 day 1( 0, 0.5 to 24 hour post dose) and Cycle 2 day 1( 0, 0.5 to 24 hour post dose).PK Parameters of Cmax of Fisogatinib (BLU-554). Only participants with evaluable PK results were included in the analysis. Where data is not presented, the PK profiles were non-measurable. Results for Phase Ib and Phase II have been pooled for the same dosage.
Pharmacokinetic Parameters of Time to Maximum Serum Concentration (Tmax) of Fisogatinib (BLU-554)For BLU554, Cycle 1 day 1( 0, 0.5 to 24 hour post dose) and Cycle 2 day 1( 0, 0.5 to 24 hour post dose).PK Parameters of Tmax of Fisogatinib (BLU-554). Only participants with evaluable PK results were included in the analysis. Where data is not presented, the PK profiles were non-measurable. Results for Phase Ib and Phase II have been pooled for the same dosage.
Pharmacokinetic Parameters of Accumulation Ratio of Sugemalimab (CS1001)For CS1001: Cycle 1 day 1(0, 0.5 to 504 hour post dose) and Cycle 4 day 1 (0, 0.5 to 504 hour post dose).PK Parameters of Rac, AUC of Sugemalimab (CS1001). Only participants with evaluable PK results were included in the analysis. Where data is not presented, the PK profiles were non-measurable. Results for Phase Ib and Phase II have been pooled for the same dosage.
Pharmacokinetic Parameters of Area Under the Serum Concentration-time Curve (AUC ) of Sugemalimab (CS1001)For CS1001: Cycle 1 day 1(0, 0.5 to 504 hour post dose) and Cycle 4 day 1 (0, 0.5 to 504 hour post dose).PK Parameters of (AUC 0-τ,ss ) of Sugemalimab (CS1001). Only participants with evaluable PK results were included in the analysis. Where data is not presented, the PK profiles were non-measurable. Results for Phase Ib and Phase II have been pooled for the same dosage.
Pharmacokinetic Parameters of Clearance at Steady State (CLss) of Sugemalimab (CS1001)For CS1001: Cycle 1 day 1(0, 0.5 to 504 hour post dose) and Cycle 4 day 1 (0, 0.5 to 504 hour post dose).PK Parameters of CLss of Sugemalimab (CS1001). Only participants with evaluable PK results were included in the analysis. Where data is not presented, the PK profiles were non-measurable. Results for Phase Ib and Phase II have been pooled for the same dosage.
Pharmacokinetic Parameters of Maximum Serum Concentration (Cmax) of Sugemalimab (CS1001)For CS1001: Cycle 1 day 1(0, 0.5 to 504 hour post dose) and Cycle 4 day 1 (0, 0.5 to 504 hour post dose).PK Parameters of Cmax of Sugemalimab (CS1001). Only participants with evaluable PK results were included in the analysis. Where data is not presented, the PK profiles were non-measurable. Results for Phase Ib and Phase II have been pooled for the same dosage.
Pharmacokinetic Parameters of Time to Maximum Serum Concentration (Tmax) of Sugemalimab (CS1001)For CS1001: Cycle 1 day 1(0, 0.5 to 504 hour post dose) and Cycle 4 day 1 (0, 0.5 to 504 hour post dose).PK Parameters of Tmax of Sugemalimab (CS1001). Only participants with evaluable PK results were included in the analysis. Where data is not presented, the PK profiles were non-measurable. Results for Phase Ib and Phase II have been pooled for the same dosage.
Pharmacokinetic Parameters of Area Under the Serum Concentration-time Curve (AUC) of Fisogatinib (BLU-554)For BLU554, Cycle 1 day 1( 0, 0.5 to 24 hour post dose) and Cycle 2 day 1( 0, 0.5 to 24 hour post dose).Pharmacokinetic parameters of area under the serum concentration-time curve (AUC0-τ,ss, Time from 0 to 24h) of Fisogatinib (BLU-554). Only participants with evaluable PK results were included in the analysis. Where data is not presented, the PK profiles were non-measurable. Results for Phase Ib and Phase II have been pooled for the same dosage.
Duration of Response Assessed by InvestigatorImaging (CT or MRI) assessments per RECIST v1.1 will be performed within 28 days prior to the first dose (baseline assessment), every 9 weeks during the first year of the study, and every 12 weeks thereafter. Up to 22 months.Duration of response for responders (CR or PR) is defined as the time interval between the date of the earliest qualifying response and the date of PD or death for any cause (whichever occurs earlier). For subjects who are alive without progression following the qualifying response, duration of response will be censored on the date of last evaluable tumor assessment or last follow-up for progression of disease.
Phase Ib: Objective Response Rate (ORR) Assessed by Investigator Based on RECIST Version 1.1Imaging (CT or MRI) assessments per RECIST v1.1 will be performed within 28 days prior to the first dose (baseline assessment), every 9 weeks during the first year of the study, and every 12 weeks thereafter. Up to 22 months.Per Response Evaluation Criteria in Solid Tumors Criteria (RECIST v1 .1) for target lesions and assessed by MRI/ CT: Complete Response (CR), Disappearance of all target lesions; Partial Response (PR), \> =30% decrease in the sum of the longest diameter of target lesions; Objective Response (OR) = CR + PR. Percentage of subjects who achieve objective tumor response (CR or PR) will be summarized.

Countries

China

Participant flow

Recruitment details

Participants were screened across 19 centers and enrolled across 11 centers in China. The study consists of 2 parts, including Phase Ib dose escalation and Phase II dose expansion. A total of 26 participants were enrolled in the study and all received ≥ 1 dose of study drug.

Participants by arm

ArmCount
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mg
Phase Ib: participants received 400 mg Fisogatinib (BLU-554) once daily (QD), in combination with 1200mg fixed dose Sugemalimab (CS1001) once every 3 weeks (Q3W). Every 21 days (3 weeks) will be considered as one cycle.
4
Phase Ib: Fisogatinib (BLU-554) 600mg in Combination With Sugemalimab (CS1001) 1200mg
Phase Ib: participants received 600 mg Fisogatinib (BLU-554) QD, in combination with 1200mg fixed dose Sugemalimab (CS1001) Q3W. Every 21 days (3 weeks) will be considered as one cycle.
7
Phase II: Fisogatinib (BLU-554) 600mg in Combination With Sugemalimab (CS1001) 1200mg
Phase II: participants received 600 mg Fisogatinib (BLU-554) QD, in combination with 1200mg fixed dose Sugemalimab (CS1001) Q3W. Every 21 days (3 weeks) will be considered as one cycle.
15
Total26

Withdrawals & dropouts

PeriodReasonFG000FG001FG002
Part Ib/II End of StudyDeath233
Part Ib/II End of StudyLost to Follow-up010
Part Ib/II End of StudyOngoing treatment002
Part Ib/II End of StudyStudy ended by sponsor138
Part Ib/II End of StudyWithdrawal by Subject102
Part Ib/II End Of Treatment-BLU554Adverse Event021
Part Ib/II End Of Treatment-BLU554Death001
Part Ib/II End Of Treatment-BLU554Ongoing treatment002
Part Ib/II End Of Treatment-BLU554Other002
Part Ib/II End Of Treatment-BLU554Physician Decision100
Part Ib/II End Of Treatment-BLU554Radiographic disease progression349
Part Ib/II End Of Treatment-BLU554Symptomatic deterioration without radiographic evidence010
Part Ib/II End Of Treatment-CS1001Adverse Event102
Part Ib/II End Of Treatment-CS1001Death001
Part Ib/II End Of Treatment-CS1001Ongoing treatment002
Part Ib/II End Of Treatment-CS1001Other001
Part Ib/II End Of Treatment-CS1001Radiographic disease progression369
Part Ib/II End Of Treatment-CS1001Symptomatic deterioration without radiographic evidence010

Baseline characteristics

CharacteristicPhase Ib: Fisogatinib (BLU-554) 600mg in Combination With Sugemalimab (CS1001) 1200mgPhase II: Fisogatinib (BLU-554) 600mg in Combination With Sugemalimab (CS1001) 1200mgTotalPhase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mg
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
1 Participants2 Participants3 Participants0 Participants
Age, Categorical
Between 18 and 65 years
6 Participants13 Participants23 Participants4 Participants
Age, Continuous48.4 Years
STANDARD_DEVIATION 11.82
51.6 Years
STANDARD_DEVIATION 12.37
49.5 Years
STANDARD_DEVIATION 11.43
43.5 Years
STANDARD_DEVIATION 4.8
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
7 Participants15 Participants26 Participants4 Participants
Race (NIH/OMB)
Black or African American
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
0 Participants0 Participants0 Participants0 Participants
Region of Enrollment
China
7 Participants15 Participants26 Participants4 Participants
Sex: Female, Male
Female
2 Participants1 Participants4 Participants1 Participants
Sex: Female, Male
Male
5 Participants14 Participants22 Participants3 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
2 / 43 / 73 / 15
other
Total, other adverse events
4 / 47 / 715 / 15
serious
Total, serious adverse events
1 / 42 / 75 / 15

Outcome results

Primary

Phase Ib: Patients With Event(s) of Dose-limiting Toxicity

Number of DLT (Dose-limiting toxicity) During the Administration of BLU-554 in Combination with CS1001. All toxicity or adverse events (AEs) are graded according to NCI-CTCAE 5.0. Any AE occurring during C1 (21 days) that is not clearly caused by something other than investigational drug.

Time frame: Cycle 1 (21 days) of treatment

Population: Fisogatinib (BLU-554) 600mg arm, 7 subjects were enrolled, of whom 6 completed DLT evaluation and 1 was unevaluable

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgPhase Ib: Patients With Event(s) of Dose-limiting Toxicity0 Participants
Phase Ib: Fisogatinib (BLU-554) 600mg in Combination With Sugemalimab (CS1001) 1200mgPhase Ib: Patients With Event(s) of Dose-limiting Toxicity0 Participants
Primary

Phase Ib: Safety and Tolerance

An AE was any untoward medical occurrence after clinical study subjects receive study drug. An SAE was any event that meets any the following criteria: death, life-threatening; inpatient hospitalization or prolongation, persistent or significant disability/incapacity;congenital malformation/birth defects and significant medical events. AE and SAE were graded by CTCAE version 5.0 by severity, from Grade 1 mild to Grade 5 death related AE.

Time frame: Safety and tolerance assessments continued for the duration of treatment. AEs and SAEs will be collected from time of signature of main informed consent, throughout the treatment period and including the follow-up period, up to approximate 22 months.

Population: Baseline Analysis Population consists of all participants receiving at least one dose of investigational product

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgPhase Ib: Safety and ToleranceInfusion-related reaction TEAE0 Participants
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgPhase Ib: Safety and ToleranceTreatment-Emergent Adverse Event(TEAE)4 Participants
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgPhase Ib: Safety and ToleranceTEAE Leading to CS1001 rate of infusion modification0 Participants
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgPhase Ib: Safety and ToleranceSerious TEAE1 Participants
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgPhase Ib: Safety and ToleranceTEAE Leading to CS1001 dose interruption0 Participants
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgPhase Ib: Safety and ToleranceGrade 3-5 TEAE2 Participants
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgPhase Ib: Safety and ToleranceTEAE Leading to CS1001 permanently discontinuation1 Participants
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgPhase Ib: Safety and ToleranceTEAE Leading to BLU-554 dose reduction0 Participants
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgPhase Ib: Safety and ToleranceSerious TEAE at least one related to CS1001 or BLU-5540 Participants
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgPhase Ib: Safety and ToleranceTEAE Leading to BLU-554 dose interruption1 Participants
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgPhase Ib: Safety and ToleranceTEAE at least one related to CS1001 or BLU-5544 Participants
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgPhase Ib: Safety and ToleranceTEAE Leading to BLU-554 permanently discontinuation0 Participants
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgPhase Ib: Safety and ToleranceImmune-related TEAE2 Participants
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgPhase Ib: Safety and ToleranceTEAE Leading to death0 Participants
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgPhase Ib: Safety and ToleranceGrade 3-5 TEAE at least one related to CS1001 or BLU-5541 Participants
Phase Ib: Fisogatinib (BLU-554) 600mg in Combination With Sugemalimab (CS1001) 1200mgPhase Ib: Safety and ToleranceTEAE Leading to death1 Participants
Phase Ib: Fisogatinib (BLU-554) 600mg in Combination With Sugemalimab (CS1001) 1200mgPhase Ib: Safety and ToleranceTreatment-Emergent Adverse Event(TEAE)7 Participants
Phase Ib: Fisogatinib (BLU-554) 600mg in Combination With Sugemalimab (CS1001) 1200mgPhase Ib: Safety and ToleranceTEAE at least one related to CS1001 or BLU-5546 Participants
Phase Ib: Fisogatinib (BLU-554) 600mg in Combination With Sugemalimab (CS1001) 1200mgPhase Ib: Safety and ToleranceGrade 3-5 TEAE6 Participants
Phase Ib: Fisogatinib (BLU-554) 600mg in Combination With Sugemalimab (CS1001) 1200mgPhase Ib: Safety and ToleranceGrade 3-5 TEAE at least one related to CS1001 or BLU-5544 Participants
Phase Ib: Fisogatinib (BLU-554) 600mg in Combination With Sugemalimab (CS1001) 1200mgPhase Ib: Safety and ToleranceSerious TEAE2 Participants
Phase Ib: Fisogatinib (BLU-554) 600mg in Combination With Sugemalimab (CS1001) 1200mgPhase Ib: Safety and ToleranceSerious TEAE at least one related to CS1001 or BLU-5541 Participants
Phase Ib: Fisogatinib (BLU-554) 600mg in Combination With Sugemalimab (CS1001) 1200mgPhase Ib: Safety and ToleranceImmune-related TEAE2 Participants
Phase Ib: Fisogatinib (BLU-554) 600mg in Combination With Sugemalimab (CS1001) 1200mgPhase Ib: Safety and ToleranceInfusion-related reaction TEAE0 Participants
Phase Ib: Fisogatinib (BLU-554) 600mg in Combination With Sugemalimab (CS1001) 1200mgPhase Ib: Safety and ToleranceTEAE Leading to CS1001 rate of infusion modification0 Participants
Phase Ib: Fisogatinib (BLU-554) 600mg in Combination With Sugemalimab (CS1001) 1200mgPhase Ib: Safety and ToleranceTEAE Leading to CS1001 dose interruption2 Participants
Phase Ib: Fisogatinib (BLU-554) 600mg in Combination With Sugemalimab (CS1001) 1200mgPhase Ib: Safety and ToleranceTEAE Leading to BLU-554 dose reduction2 Participants
Phase Ib: Fisogatinib (BLU-554) 600mg in Combination With Sugemalimab (CS1001) 1200mgPhase Ib: Safety and ToleranceTEAE Leading to BLU-554 dose interruption1 Participants
Phase Ib: Fisogatinib (BLU-554) 600mg in Combination With Sugemalimab (CS1001) 1200mgPhase Ib: Safety and ToleranceTEAE Leading to BLU-554 permanently discontinuation2 Participants
Phase Ib: Fisogatinib (BLU-554) 600mg in Combination With Sugemalimab (CS1001) 1200mgPhase Ib: Safety and ToleranceTEAE Leading to CS1001 permanently discontinuation0 Participants
Primary

Phase II: Objective Response Rate (ORR) Assessed by Investigator Based on RECIST Version 1.1

Per Response Evaluation Criteria in Solid Tumors Criteria (RECIST v1 .1) for target lesions and assessed by MRI/ CT: Complete Response (CR), Disappearance of all target lesions; Partial Response (PR), \> =30% decrease in the sum of the longest diameter of target lesions; Objective Response (OR) = CR + PR. Percentage of subjects who achieve objective tumor response (CR or PR) will be summarized.

Time frame: Imaging (CT or MRI) assessments per RECIST v1.1 will be performed within 28 days prior to the first dose (baseline assessment), every 9 weeks during the first year of the study, and every 12 weeks thereafter. Up to 22 months.

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgPhase II: Objective Response Rate (ORR) Assessed by Investigator Based on RECIST Version 1.1Responder3 Participants
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgPhase II: Objective Response Rate (ORR) Assessed by Investigator Based on RECIST Version 1.1Non-Responder12 Participants
Secondary

Disease Control Rate Assessed by Investigator

Disease control rate (DCR) is defined as the proportion of participants who achieve complete response (CR), partial response (PR), and stable disease (SD) based on Response Evaluation Criteria In Solid Tumors (RECIST)v1.1. Per Response Evaluation Criteria in Solid Tumors Criteria (RECIST v1 .1) for target lesions and assessed by MRI/ CT: Complete Response (CR), Disappearance of all target lesions; Partial Response (PR), \> =30% decrease in the sum of the longest diameter of target lesions. Stable disease(SD) is defined as a tumor that does not meet the criteria for progression or for response.

Time frame: Imaging (CT or MRI) assessments per RECIST v1.1 will be performed within 28 days prior to the first dose (baseline assessment), every 9 weeks during the first year of the study, and every 12 weeks thereafter. Up to 22 months.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgDisease Control Rate Assessed by Investigator1 Participants
Phase Ib: Fisogatinib (BLU-554) 600mg in Combination With Sugemalimab (CS1001) 1200mgDisease Control Rate Assessed by Investigator3 Participants
Phase II: Fisogatinib (BLU-554) 600mg in Combination With Sugemalimab (CS1001) 1200mgDisease Control Rate Assessed by Investigator9 Participants
Secondary

Disease Control Rate by PD-L1 Protein Level

Time frame: Imaging (CT or MRI) assessments by FGF19 protein and PD-L1 protein level will be performed within 28 days prior to the first dose (baseline assessment), every 9 weeks during the first year of the study, and every 12 weeks thereafter. Up to 22 months.

Population: Efficacy analysis dataset with dichotomous PD-L1 parameters at baseline.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgDisease Control Rate by PD-L1 Protein Level2 Participants
Phase Ib: Fisogatinib (BLU-554) 600mg in Combination With Sugemalimab (CS1001) 1200mgDisease Control Rate by PD-L1 Protein Level7 Participants
Phase II: Fisogatinib (BLU-554) 600mg in Combination With Sugemalimab (CS1001) 1200mgDisease Control Rate by PD-L1 Protein Level8 Participants
Phase II: BLU-554 600mg in Combination With CS1001 1200mg With TC Percentage >=1 PercentageDisease Control Rate by PD-L1 Protein Level1 Participants
Secondary

Duration of Response Assessed by Investigator

Duration of response for responders (CR or PR) is defined as the time interval between the date of the earliest qualifying response and the date of PD or death for any cause (whichever occurs earlier). For subjects who are alive without progression following the qualifying response, duration of response will be censored on the date of last evaluable tumor assessment or last follow-up for progression of disease.

Time frame: Imaging (CT or MRI) assessments per RECIST v1.1 will be performed within 28 days prior to the first dose (baseline assessment), every 9 weeks during the first year of the study, and every 12 weeks thereafter. Up to 22 months.

Population: Only include participants with confirmed response (CR or PR).

ArmMeasureValue (MEDIAN)
Phase Ib: Fisogatinib (BLU-554) 600mg in Combination With Sugemalimab (CS1001) 1200mgDuration of Response Assessed by Investigator4.34 Months
Phase II: Fisogatinib (BLU-554) 600mg in Combination With Sugemalimab (CS1001) 1200mgDuration of Response Assessed by InvestigatorNA Months
Secondary

Objective Response Rate (ORR) by PD-L1 Protein Level

Time frame: Imaging (CT or MRI) assessments by FGF19 protein and PD-L1 protein level will be performed within 28 days prior to the first dose (baseline assessment), every 9 weeks during the first year of the study, and every 12 weeks thereafter. Up to 22 months.

Population: Efficacy analysis dataset with dichotomous PD-L1 parameters at baseline.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgObjective Response Rate (ORR) by PD-L1 Protein Level1 Participants
Phase Ib: Fisogatinib (BLU-554) 600mg in Combination With Sugemalimab (CS1001) 1200mgObjective Response Rate (ORR) by PD-L1 Protein Level2 Participants
Phase II: Fisogatinib (BLU-554) 600mg in Combination With Sugemalimab (CS1001) 1200mgObjective Response Rate (ORR) by PD-L1 Protein Level2 Participants
Phase II: BLU-554 600mg in Combination With CS1001 1200mg With TC Percentage >=1 PercentageObjective Response Rate (ORR) by PD-L1 Protein Level1 Participants
Secondary

Overall Survival

Overall survival is defined as the time interval between the date of the first investigational product dose to the date of death from any cause

Time frame: Subject should be followed from time of registration till the time of subject death. Up to 22 months.

ArmMeasureValue (MEDIAN)
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgOverall Survival16.2 Months
Phase Ib: Fisogatinib (BLU-554) 600mg in Combination With Sugemalimab (CS1001) 1200mgOverall SurvivalNA Months
Phase II: Fisogatinib (BLU-554) 600mg in Combination With Sugemalimab (CS1001) 1200mgOverall SurvivalNA Months
Secondary

Patients With Anti-CS1001 Antibody

Time frame: Pre-dose of Cycle 1, 2, 4, 5, 7, 10, 13, 16 and every 8 cycles thereafter. Up to 22 months.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgPatients With Anti-CS1001 Antibody0 Participants
Phase Ib: Fisogatinib (BLU-554) 600mg in Combination With Sugemalimab (CS1001) 1200mgPatients With Anti-CS1001 Antibody0 Participants
Phase II: Fisogatinib (BLU-554) 600mg in Combination With Sugemalimab (CS1001) 1200mgPatients With Anti-CS1001 Antibody0 Participants
Secondary

Pharmacokinetic Parameters of Accumulation Ratio of Fisogatinib (BLU-554)

Pharmacokinetic(PK) parameters of accumulation ratio of Fisogatinib (BLU-554),Rac,AUC. Only participants with evaluable PK results were included in the analysis. Where data is not presented, the PK profiles were non-measurable. Results for Phase Ib and Phase II have been pooled for the same dosage.

Time frame: For BLU554, Cycle 1 day 1( 0, 0.5 to 24 hour post dose) and Cycle 2 day 1( 0, 0.5 to 24 hour post dose).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgPharmacokinetic Parameters of Accumulation Ratio of Fisogatinib (BLU-554)1.22 ratioGeometric Coefficient of Variation 36.41
Phase Ib: Fisogatinib (BLU-554) 600mg in Combination With Sugemalimab (CS1001) 1200mgPharmacokinetic Parameters of Accumulation Ratio of Fisogatinib (BLU-554)1.35 ratioGeometric Coefficient of Variation 42
Secondary

Pharmacokinetic Parameters of Accumulation Ratio of Sugemalimab (CS1001)

PK Parameters of Rac, AUC of Sugemalimab (CS1001). Only participants with evaluable PK results were included in the analysis. Where data is not presented, the PK profiles were non-measurable. Results for Phase Ib and Phase II have been pooled for the same dosage.

Time frame: For CS1001: Cycle 1 day 1(0, 0.5 to 504 hour post dose) and Cycle 4 day 1 (0, 0.5 to 504 hour post dose).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgPharmacokinetic Parameters of Accumulation Ratio of Sugemalimab (CS1001)1.1 ratioGeometric Coefficient of Variation 67.01
Phase Ib: Fisogatinib (BLU-554) 600mg in Combination With Sugemalimab (CS1001) 1200mgPharmacokinetic Parameters of Accumulation Ratio of Sugemalimab (CS1001)2.44 ratioGeometric Coefficient of Variation 5.85
Secondary

Pharmacokinetic Parameters of Area Under the Serum Concentration-time Curve (AUC) of Fisogatinib (BLU-554)

Pharmacokinetic parameters of area under the serum concentration-time curve (AUC0-τ,ss, Time from 0 to 24h) of Fisogatinib (BLU-554). Only participants with evaluable PK results were included in the analysis. Where data is not presented, the PK profiles were non-measurable. Results for Phase Ib and Phase II have been pooled for the same dosage.

Time frame: For BLU554, Cycle 1 day 1( 0, 0.5 to 24 hour post dose) and Cycle 2 day 1( 0, 0.5 to 24 hour post dose).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgPharmacokinetic Parameters of Area Under the Serum Concentration-time Curve (AUC) of Fisogatinib (BLU-554)55.3 h*μg/mLGeometric Coefficient of Variation 65.43
Phase Ib: Fisogatinib (BLU-554) 600mg in Combination With Sugemalimab (CS1001) 1200mgPharmacokinetic Parameters of Area Under the Serum Concentration-time Curve (AUC) of Fisogatinib (BLU-554)73.8 h*μg/mLGeometric Coefficient of Variation 29.96
Secondary

Pharmacokinetic Parameters of Area Under the Serum Concentration-time Curve (AUC ) of Sugemalimab (CS1001)

PK Parameters of (AUC 0-τ,ss ) of Sugemalimab (CS1001). Only participants with evaluable PK results were included in the analysis. Where data is not presented, the PK profiles were non-measurable. Results for Phase Ib and Phase II have been pooled for the same dosage.

Time frame: For CS1001: Cycle 1 day 1(0, 0.5 to 504 hour post dose) and Cycle 4 day 1 (0, 0.5 to 504 hour post dose).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgPharmacokinetic Parameters of Area Under the Serum Concentration-time Curve (AUC ) of Sugemalimab (CS1001)148000 h*μg/mL
Phase Ib: Fisogatinib (BLU-554) 600mg in Combination With Sugemalimab (CS1001) 1200mgPharmacokinetic Parameters of Area Under the Serum Concentration-time Curve (AUC ) of Sugemalimab (CS1001)136000 h*μg/mLGeometric Coefficient of Variation 34.14
Secondary

Pharmacokinetic Parameters of Clearance at Steady State (CLss) of Fisogatinib (BLU-554)

Pharmacokinetic Parameters of Clearance at Steady State (Clss) of Fisogatinib (BLU-554). Only participants with evaluable PK results were included in the analysis. Where data is not presented, the PK profiles were non-measurable. Results for Phase Ib and Phase II have been pooled for the same dosage.

Time frame: For BLU554, Cycle 1 day 1( 0, 0.5 to 24 hour post dose) and Cycle 2 day 1( 0, 0.5 to 24 hour post dose).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgPharmacokinetic Parameters of Clearance at Steady State (CLss) of Fisogatinib (BLU-554)7.24 L/hGeometric Coefficient of Variation 65.43
Phase Ib: Fisogatinib (BLU-554) 600mg in Combination With Sugemalimab (CS1001) 1200mgPharmacokinetic Parameters of Clearance at Steady State (CLss) of Fisogatinib (BLU-554)8.13 L/hGeometric Coefficient of Variation 29.96
Secondary

Pharmacokinetic Parameters of Clearance at Steady State (CLss) of Sugemalimab (CS1001)

PK Parameters of CLss of Sugemalimab (CS1001). Only participants with evaluable PK results were included in the analysis. Where data is not presented, the PK profiles were non-measurable. Results for Phase Ib and Phase II have been pooled for the same dosage.

Time frame: For CS1001: Cycle 1 day 1(0, 0.5 to 504 hour post dose) and Cycle 4 day 1 (0, 0.5 to 504 hour post dose).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgPharmacokinetic Parameters of Clearance at Steady State (CLss) of Sugemalimab (CS1001)0.00808 L/h
Phase Ib: Fisogatinib (BLU-554) 600mg in Combination With Sugemalimab (CS1001) 1200mgPharmacokinetic Parameters of Clearance at Steady State (CLss) of Sugemalimab (CS1001)0.00821 L/hGeometric Coefficient of Variation 23.74
Secondary

Pharmacokinetic Parameters of Maximum Serum Concentration (Cmax) of Fisogatinib (BLU-554)

PK Parameters of Cmax of Fisogatinib (BLU-554). Only participants with evaluable PK results were included in the analysis. Where data is not presented, the PK profiles were non-measurable. Results for Phase Ib and Phase II have been pooled for the same dosage.

Time frame: For BLU554, Cycle 1 day 1( 0, 0.5 to 24 hour post dose) and Cycle 2 day 1( 0, 0.5 to 24 hour post dose).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgPharmacokinetic Parameters of Maximum Serum Concentration (Cmax) of Fisogatinib (BLU-554)7.26 μg/mLGeometric Coefficient of Variation 50.01
Phase Ib: Fisogatinib (BLU-554) 600mg in Combination With Sugemalimab (CS1001) 1200mgPharmacokinetic Parameters of Maximum Serum Concentration (Cmax) of Fisogatinib (BLU-554)8.14 μg/mLGeometric Coefficient of Variation 27.52
Secondary

Pharmacokinetic Parameters of Maximum Serum Concentration (Cmax) of Sugemalimab (CS1001)

PK Parameters of Cmax of Sugemalimab (CS1001). Only participants with evaluable PK results were included in the analysis. Where data is not presented, the PK profiles were non-measurable. Results for Phase Ib and Phase II have been pooled for the same dosage.

Time frame: For CS1001: Cycle 1 day 1(0, 0.5 to 504 hour post dose) and Cycle 4 day 1 (0, 0.5 to 504 hour post dose).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgPharmacokinetic Parameters of Maximum Serum Concentration (Cmax) of Sugemalimab (CS1001)513 μg/mLGeometric Coefficient of Variation 11.08
Phase Ib: Fisogatinib (BLU-554) 600mg in Combination With Sugemalimab (CS1001) 1200mgPharmacokinetic Parameters of Maximum Serum Concentration (Cmax) of Sugemalimab (CS1001)463 μg/mLGeometric Coefficient of Variation 26.16
Secondary

Pharmacokinetic Parameters of Time to Maximum Serum Concentration (Tmax) of Fisogatinib (BLU-554)

PK Parameters of Tmax of Fisogatinib (BLU-554). Only participants with evaluable PK results were included in the analysis. Where data is not presented, the PK profiles were non-measurable. Results for Phase Ib and Phase II have been pooled for the same dosage.

Time frame: For BLU554, Cycle 1 day 1( 0, 0.5 to 24 hour post dose) and Cycle 2 day 1( 0, 0.5 to 24 hour post dose).

ArmMeasureValue (MEDIAN)
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgPharmacokinetic Parameters of Time to Maximum Serum Concentration (Tmax) of Fisogatinib (BLU-554)1.53 hour
Phase Ib: Fisogatinib (BLU-554) 600mg in Combination With Sugemalimab (CS1001) 1200mgPharmacokinetic Parameters of Time to Maximum Serum Concentration (Tmax) of Fisogatinib (BLU-554)2.05 hour
Secondary

Pharmacokinetic Parameters of Time to Maximum Serum Concentration (Tmax) of Sugemalimab (CS1001)

PK Parameters of Tmax of Sugemalimab (CS1001). Only participants with evaluable PK results were included in the analysis. Where data is not presented, the PK profiles were non-measurable. Results for Phase Ib and Phase II have been pooled for the same dosage.

Time frame: For CS1001: Cycle 1 day 1(0, 0.5 to 504 hour post dose) and Cycle 4 day 1 (0, 0.5 to 504 hour post dose).

ArmMeasureValue (MEDIAN)
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgPharmacokinetic Parameters of Time to Maximum Serum Concentration (Tmax) of Sugemalimab (CS1001)2.02 hour
Phase Ib: Fisogatinib (BLU-554) 600mg in Combination With Sugemalimab (CS1001) 1200mgPharmacokinetic Parameters of Time to Maximum Serum Concentration (Tmax) of Sugemalimab (CS1001)2.12 hour
Secondary

Phase Ib: Objective Response Rate (ORR) Assessed by Investigator Based on RECIST Version 1.1

Per Response Evaluation Criteria in Solid Tumors Criteria (RECIST v1 .1) for target lesions and assessed by MRI/ CT: Complete Response (CR), Disappearance of all target lesions; Partial Response (PR), \> =30% decrease in the sum of the longest diameter of target lesions; Objective Response (OR) = CR + PR. Percentage of subjects who achieve objective tumor response (CR or PR) will be summarized.

Time frame: Imaging (CT or MRI) assessments per RECIST v1.1 will be performed within 28 days prior to the first dose (baseline assessment), every 9 weeks during the first year of the study, and every 12 weeks thereafter. Up to 22 months.

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgPhase Ib: Objective Response Rate (ORR) Assessed by Investigator Based on RECIST Version 1.1Responder0 Participants
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgPhase Ib: Objective Response Rate (ORR) Assessed by Investigator Based on RECIST Version 1.1Non-Responder4 Participants
Phase Ib: Fisogatinib (BLU-554) 600mg in Combination With Sugemalimab (CS1001) 1200mgPhase Ib: Objective Response Rate (ORR) Assessed by Investigator Based on RECIST Version 1.1Responder1 Participants
Phase Ib: Fisogatinib (BLU-554) 600mg in Combination With Sugemalimab (CS1001) 1200mgPhase Ib: Objective Response Rate (ORR) Assessed by Investigator Based on RECIST Version 1.1Non-Responder6 Participants
Secondary

Phase II: Safety and Tolerance

An AE was any untoward medical occurrence after clinical study subjects receive study drug. An SAE was any event that meets any the following criteria: death, life-threatening; inpatient hospitalization or prolongation, persistent or significant disability/incapacity;congenital malformation/birth defects and significant medical events. AE and SAE were graded by CTCAE version 5.0 by severity, from Grade 1 mild to Grade 5 death related AE.

Time frame: Safety and tolerance assessments continued for the duration of treatment. AEs and SAEs will be collected from time of signature of main informed consent, throughout the treatment period and including the follow-up period, up to approximate 22 months.

Population: Baseline Analysis Population consists of all participants receiving at least one dose of investigational product

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgPhase II: Safety and ToleranceTreatment-Emergent Adverse Event(TEAE)15 Participants
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgPhase II: Safety and ToleranceTEAE at least one related to CS1001 or BLU-55415 Participants
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgPhase II: Safety and ToleranceGrade 3-5 TEAE7 Participants
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgPhase II: Safety and ToleranceGrade 3-5 TEAE at least one related to CS1001 or BLU-5546 Participants
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgPhase II: Safety and ToleranceSerious TEAE5 Participants
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgPhase II: Safety and ToleranceSerious TEAE at least one related to CS1001 or BLU-5543 Participants
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgPhase II: Safety and ToleranceImmune-related TEAE4 Participants
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgPhase II: Safety and ToleranceInfusion-related reaction TEAE1 Participants
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgPhase II: Safety and ToleranceTEAE Leading to CS1001 rate of infusion modification0 Participants
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgPhase II: Safety and ToleranceTEAE Leading to CS1001 dose interruption6 Participants
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgPhase II: Safety and ToleranceTEAE Leading to CS1001 permanently discontinuation2 Participants
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgPhase II: Safety and ToleranceTEAE Leading to BLU-554 dose reduction8 Participants
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgPhase II: Safety and ToleranceTEAE Leading to BLU-554 dose interruption4 Participants
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgPhase II: Safety and ToleranceTEAE Leading to BLU-554 permanently discontinuation1 Participants
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgPhase II: Safety and ToleranceTEAE Leading to death1 Participants
Secondary

Progression-free Survival Assessed by Investigator

Progression-free Survival is defined as the time from the date of first study dose to disease progression or death (whichever occurs first).

Time frame: Imaging (CT or MRI) assessments per RECIST v1.1 will be performed within 28 days prior to the first dose (baseline assessment), every 9 weeks during the first year of the study, and every 12 weeks thereafter. Up to 22 months.

ArmMeasureValue (MEDIAN)
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgProgression-free Survival Assessed by Investigator2.3 Months
Phase Ib: Fisogatinib (BLU-554) 600mg in Combination With Sugemalimab (CS1001) 1200mgProgression-free Survival Assessed by Investigator2.1 Months
Phase II: Fisogatinib (BLU-554) 600mg in Combination With Sugemalimab (CS1001) 1200mgProgression-free Survival Assessed by Investigator4.1 Months
Secondary

Time to Progression Assessed by Investigator

Time to Progression is defined as the time from the date of first study dose to disease progression. Subjects without event (no disease progression) will be censored at the date of last tumor assessment.

Time frame: Imaging (CT or MRI) assessments per RECIST v1.1 will be performed within 28 days prior to the first dose (baseline assessment), every 9 weeks during the first year of the study, and every 12 weeks thereafter. Up to 22 months.

ArmMeasureValue (MEDIAN)
Phase Ib: Fisogatinib (BLU-554) 400mg in Combination With Sugemalimab (CS1001) 1200mgTime to Progression Assessed by Investigator2.3 Months
Phase Ib: Fisogatinib (BLU-554) 600mg in Combination With Sugemalimab (CS1001) 1200mgTime to Progression Assessed by Investigator3.1 Months
Phase II: Fisogatinib (BLU-554) 600mg in Combination With Sugemalimab (CS1001) 1200mgTime to Progression Assessed by Investigator4.2 Months

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026